i try http://wiki.apache.org/solr/MergingSolrIndexes
system: win2003, jdk 1.6 Error information: > Caused by: java.lang.ClassNotFoundException: > org.apache.lucene.misc.IndexMergeTo > ol > at java.net.URLClassLoader$1.run(Unknown Source) > at java.security.AccessController.doPrivileged(Native Method) > at java.net.URLClassLoader.findClass(Unknown Source) > at java.lang.ClassLoader.loadClass(Unknown Source) > at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) > at java.lang.ClassLoader.loadClass(Unknown Source) > at java.lang.ClassLoader.loadClassInternal(Unknown Source) > Could not find the main class: org/apache/lucene/misc/IndexMergeTool. > Program w > ill exit. > -- regards j.L ( I live in Shanghai, China)